== sanity test 101a: check read-ahead for random reads === 13:25:42 (1741627542) nreads: 10000 file size: 96MB 35.895435s, 18.2575MB/s osc.lustre-OST0000-osc-ffff8800a8e02000.rpc_stats= snapshot_time: 1741627581.708339839 secs.nsecs start_time: 1741627542.559556660 secs.nsecs elapsed_time: 39.148783179 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 25 25 2: 0 0 0 | 1 25 50 3: 0 0 0 | 1 25 75 4: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 osc.lustre-OST0001-osc-ffff8800a8e02000.rpc_stats= snapshot_time: 1741627581.708428024 secs.nsecs start_time: 1741627542.559579727 secs.nsecs elapsed_time: 39.148848297 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 1 1 2: 1 0 0 | 1 0 2 4: 3 0 0 | 0 0 2 8: 3 0 0 | 0 0 2 16: 4942 99 100 | 0 0 2 32: 0 0 100 | 0 0 2 64: 0 0 100 | 0 0 2 128: 0 0 100 | 0 0 2 256: 0 0 100 | 100 97 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4949 100 100 | 101 98 98 2: 0 0 100 | 1 0 99 3: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 4 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 4 0 0 | 0 0 3 32: 6 0 0 | 0 0 3 64: 16 0 0 | 0 0 3 128: 26 0 1 | 0 0 3 256: 56 1 2 | 1 0 4 512: 108 2 4 | 2 1 6 1024: 204 4 8 | 4 3 10 2048: 436 8 17 | 8 7 18 4096: 869 17 34 | 16 15 33 8192: 1696 34 69 | 32 31 65 16384: 1525 30 100 | 36 34 100 llite.lustre-ffff8800a8e02000.read_ahead_stats= snapshot_time 1741627581.712094320 secs.nsecs start_time 1741627542.564168106 secs.nsecs elapsed_time 39.147926214 secs.nsecs hits 74135 samples [pages] misses 4949 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 74135 samples [pages] failed_to_fast_read 4949 samples [pages] readahead_pages 4949 samples [pages] 1 15 74135